Mobile crusher

Inactive Publication Date: 2009-12-10
KOMATSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Since the controller that controls the work implement speed is provided, the speed of the work implement can be controlled by the controller depending on the opening degree of the gap (outlet gap) between the lower ends of the fixed jaw and swing jaw of the crusher. The particle size of the crushed materials depends on the opening deg

Problems solved by technology

Thus, the delivery speed is too fast when the crushed materials having a small particle

Method used

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first exemplary embodiment

[0016]A first exemplary embodiment of the invention will be described below with reference to the attached drawings.

[0017]FIG. 1 is a side view showing a mobile crusher 1 according to the first exemplary embodiment. The mobile crusher 1 crushes raw materials loaded by a loader such as a hydraulic excavator and a wheel loader to produce crushed materials having a predetermined particle size.

[0018]The mobile crusher 1 includes: a main unit 10 having a pair of undercarriage members 11 (one of which is shown); a feed unit 20 provided to the rear side on top of the main unit 10 (on the left side in FIG. 1) for supplying raw materials; a crusher 30 provided to the front side of the feed unit 20 (on the right side in FIG. 1); a power unit 40 provided to the front side of the crusher 30; a discharge conveyor 50 (work implement) extending forward and obliquely upward between a pair of crawlers 15 on a lower portion of the main unit 10; and a controller 70 for controlling the discharge convey...

second exemplary embodiment

[0036]FIG. 6 is a block diagram of the controller 70 and FIG. 7 is a flow chart of the controller 70 according to a second exemplary embodiment. In the second exemplary embodiment, an outlet gap input unit 76 such as an operation panel is connected to the controller 70. A desired outlet gap W is inputted to the outlet gap input unit 76. The controller 70 controls an advancement and retraction amount of the mechanical lock hydraulic cylinder 42 to provide the outlet gap W inputted to the outlet gap input unit 76.

[0037]In the second exemplary embodiment, an operator initially inputs a desired outlet gap W to the outlet gap input unit 76 (S1). Then, the outlet gap calculator 71 of the controller 70 references the map M1, reads a rotation angle θ in accordance with the inputted outlet gap W to provide a target angle θ0, and outputs a drive command to the advancement and retraction driver of the mechanical lock hydraulic cylinder 42 so that the rotation angle θ of the mechanical lock hyd...

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Abstract

A mobile crusher includes: a crusher having a fixed jaw and a swing jaw and adjusting an outlet gap between lower ends of the fixed jaw and the swing jaw, the crusher crushing raw materials by swing movement of the swing jaw toward the fixed jaw and discharging the raw materials crushed by the crusher from the outlet gap to produce crushed materials; a work implement disposed on an upper stream or a lower stream of the crusher to produce the crushed materials; and a controller that controls a work implement speed of the work implement depending on the outlet gap.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The present invention relates to a mobile crusher.[0003]2. Description of Related Art[0004]In a typical mobile crusher including a crusher for crushing raw materials, the raw materials conveyed by a feeder are crushed to a predetermined particle size and the crushed materials are discharged by a conveyor as products (For example, Document 1: JP-A-11-10023). When a jaw crusher is used, the particle size of the crushed materials is determined by adjusting an outlet gap (from which the crushed materials are discharged out of the crusher) between a lower end of a swing jaw and a lower end of a fixed jaw. At this time, the particle size of the crushed materials is increased when the outlet gap is enlarged. Thus, an operating quantity (a crushing throughput per hour) of the crusher for crushing raw materials is usually increased. Conversely, when the outlet gap is shrunk, the particle size of the crushed materials is decrease...

Claims

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Application Information

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IPC IPC(8): B02C25/00B02C21/02B02C23/02
CPCB02C1/04B02C25/00B02C21/026B02C21/02
Inventor YAMAGUCHI, MASAHONISHIDA, YASUTAKAYAMADA, MITSUNOBUNAKAYAMA, TOORUTOGASHI, RYOUICHI
Owner KOMATSU LTD
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